page_title: Olivier pile
section_title: Installation
hierarchical_section_title: Olivier pile / Installation
caption_attribution_description: Nederlands: Uitvoeringsmethode van de Olivier Paal English: Implementation method of the Olivier Pile
context_page_description: An Olivier pile is a drilled displacement pile. This is an underground deep foundation pile made of concrete or reinforced concrete with a screw-shaped shaft which is performed without soil removal.
context_section_description: An Olivier Pile is screwed into the ground without vibration, the soil is displaced sideways. No soil is transported to the surface.
  The rotary pressure is compared with the results of the cone penetration test.
  The rotary head with a maximum torque of 55 ton meter is pulled up and down along an adjustable leader, which is strong enough to hold all the forces. The leader is adjustable in all directions, so that it is possible to drill leaning backward or forward.
  When the desired depth has been reached, it is possible to place reinforcement through the casing.
  Then the auger head is screwed back. The lost tip is disconnected from the auger head and left behind. During the screwback process, the soil is displaced again. This system is called 'double soil displacement'.
  While screwing back, concrete is poured into the casing. Because of the weight of the concrete, the concrete is injected into the space under the auger head. During the screwing back, the Olivier Pile is formed with the screw-shaped shaft. The screw-shape has a pitch of ±250mm (±10") and an external diameter of ±200mm (±8") larger than the base shaft. This process continues until the entire casing and the auger head are back on the ground.
caption: Implementation method of the Olivier Pile.
  1. clockwise drilling.
  2. required depth reached.
  3. reverse drilling and at the same time fill the space with concrete (and reinforcement).
  4. the formed pile.
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